feat: rebuild rss-news backend, admin ui, and legal extraction pipeline

.github/workflows/test.yml

@@ -0,0 +1,39 @@
+name: Backend Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  backend-tests:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r backend/requirements.txt
+          pip install -r backend/requirements-test.txt
+
+      - name: Run tests with coverage
+        env:
+          APP_DB_PATH: /tmp/rss_news_test.db
+        run: |
+          pytest backend/tests --cov=backend/app --cov-report=term-missing --cov-report=xml
+
+      - name: Upload coverage artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-xml
+          path: coverage.xml